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Fossil Gum Ball?


LBI

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Back when I was finding Dakoticancer australis crabs in the Corsicana Fm, they presented white to yellow in orange/tan marl, usually just a carapace with no appendages, so the one shown is one of the 20 most complete out of the 500 carapaces I picked up over 10-12 years.  

 

Without a photo of your oysters etc in situ, I will mention that many formations in the area form a dark soil overlying the subsoil and bedded formation, and oysters are resistant enough to survive considerable transport distance from upstream, ending up in subsoil and subsurface gravel deposits near stream beds, creating a bit of confusion. 

BA8AF4A6-BFB8-4DC3-A1F3-A082D4A7277D.jpeg

Grüße,

Daniel A. Wöhr aus Südtexas

"To the motivated go the spoils."

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On 8/8/2019 at 10:13 AM, El_Hueso said:

What makes you think that is a crab fossil? I'm not seeing it...

Ditto.

 

 

Mark.

 

Fossil hunting is easy -- they don't run away when you shoot at them!

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22 hours ago, Uncle Siphuncle said:

Back when I was finding Dakoticancer australis crabs in the Corsicana Fm, they presented white to yellow in orange/tan marl, usually just a carapace with no appendages, so the one shown is one of the 20 most complete out of the 500 carapaces I picked up over 10-12 years.  

 

Without a photo of your oysters etc in situ, I will mention that many formations in the area form a dark soil overlying the subsoil and bedded formation, and oysters are resistant enough to survive considerable transport distance from upstream, ending up in subsoil and subsurface gravel deposits near stream beds, creating a bit of confusion. 

BA8AF4A6-BFB8-4DC3-A1F3-A082D4A7277D.jpeg

Sir, thank you for that information. I have not seen any gravel anywhere on this site as of yet. The excavation in one area is now at 12’ deep by 40’ wide and roughly 200’ long. When I can, I’ll try and send a pic of exposed wall, right now it is not possible. I have attached a pic that is not in situ, but of some fossils I picked out of the spoils pile. I wish I had more time to delve into this, perhaps over the weekend I’ll have more time. 
 
Thanks again, 
 
LBI
 

971CC076-DC9C-42D5-9822-522ECBCD99C2.jpeg

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On 8/9/2019 at 4:11 PM, LBI said:
Sir, thank you for that information. I have not seen any gravel anywhere on this site as of yet. The excavation in one area is now at 12’ deep by 40’ wide and roughly 200’ long. When I can, I’ll try and send a pic of exposed wall, right now it is not possible. I have attached a pic that is not in situ, but of some fossils I picked out of the spoils pile. I wish I had more time to delve into this, perhaps over the weekend I’ll have more time. 
Thanks again, LBI
 

971CC076-DC9C-42D5-9822-522ECBCD99C2.jpeg

That matix looks consistent with Corsicana fm.  Most common oysters in the Corsicana are Exogyra costata and Pycnodonte mutabilis.  There are a lot of smaller fossils in certain horizons that aren't easy to see unless several rains winnow and erode them out.  Then highest success goes to collectors employing gloves and kneepads.

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Grüße,

Daniel A. Wöhr aus Südtexas

"To the motivated go the spoils."

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Back to the first question. Could it be Girtyocoelia?

 

 

Mark.

 

Fossil hunting is easy -- they don't run away when you shoot at them!

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1 hour ago, Mark Kmiecik said:

Back to the first question. Could it be Girtyocoelia?

 

I doubt it; the geologic age range is late Cretaceous.

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The human mind has the ability to believe anything is true.  -  JJ

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